The rakish Coupe concept was developed based on the existing CTS sedan, but was far different from the A-pillar aft. A true hardtop with no B-pillar, it premiered at the 2007 North American International Auto Show. Although it shares most dimensions with the sedan, it is two inches lower. It incorporated Recaro seats, remote-opening door handles, and 7-spoke wheels, 20 inches in front and 21 inches in the rear. The Coupe appeared as a production model in 2010.